Metallics JFMB95 Screw 10-32 x 1/2 FH SL MS BR (Jar 100)

Yes. Standard steel outlet boxes, device rings, and plaster rings are tapped 10-32, so this screw threads straight in. At 1/2 inch of length it is sized for mounting devices and covers rather than reaching through thick build-ups; if you are stacking an extension ring or shimming out from a deep-set box, you will want a longer 10-32 screw instead.

It is a brass machine screw, not plated steel. Brass is the usual pick where the screw head will be visible on a brass or bronze finish plate, and where corrosion resistance matters more than raw strength. If you need maximum tightening torque on a structural bracket, a steel machine screw is the better choice.

A flat head, like the one on the JFMB95, seats flush in a countersunk hole, so nothing projects above the plate or ring surface. Round and oval heads sit proud and are used where the hole is not countersunk. If the plate or bracket you are fastening has a tapered countersink, the flat head is the match; if it has a flat-bottomed hole, a round head will bear better.

Each jar holds 100 screws. Metallics supplies this item in jar pack, which is the format service vans and MRO shops usually stock for loose fasteners.